<div style="height:500px;text-align:center;overflow-y:scroll;padding-bottom: 15px;margin-left: 12px;margin-right: 12px;">
	<div style="margin: 0 auto;height: 50%;width: 50%;position: relative;top: 20%;">
		<img src="img/log.jpg" style="width: 100%;height: 100%;" />
		<font>欢迎访问菜鸡小组的电商后台管理系统</font>
	</div>
</div>